From: Joerg Roedel <joerg.roedel@xxxxxxx>
This patch implements the clean-bit for the dr6 and dr7
debug registers in the vmcb.
Signed-off-by: Joerg Roedel <joerg.roedel@xxxxxxx>
Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 135727c..89be0d6 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -193,6 +193,7 @@ enum {
VMCB_INTR, /* int_ctl, int_vector */
VMCB_NPT, /* npt_en, nCR3, gPAT */
VMCB_CR, /* CR0, CR3, CR4, EFER */
+ VMCB_DR, /* DR6, DR7 */
VMCB_DIRTY_MAX,
};
@@ -1484,6 +1485,8 @@ static void svm_guest_debug(struct kvm_vcpu *vcpu, struct kvm_guest_debug *dbg)
else
svm->vmcb->save.dr7 = vcpu->arch.dr7;
+ mark_dirty(svm->vmcb, VMCB_DR);
+
update_db_intercept(vcpu);
}
@@ -1506,6 +1509,7 @@ static void svm_set_dr7(struct kvm_vcpu *vcpu, unsigned long value)
struct vcpu_svm *svm = to_svm(vcpu);
svm->vmcb->save.dr7 = value;
+ mark_dirty(svm->vmcb, VMCB_DR);
}
static int pf_interception(struct vcpu_svm *svm)
--
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